package com.can.ThreadState;

import java.text.SimpleDateFormat;
import java.util.Date;

//模拟倒计时,,,
public class TestSleep2模拟倒计时 {

    public static void main(String[] args) throws InterruptedException {
        TestSleep2模拟倒计时.tenDown();
        //打印当前系统时间
        Date startTime = new Date(System.currentTimeMillis());
        while (true){
            Thread.sleep(1000);
            System.out.println(new SimpleDateFormat("HH:mm:ss").format(startTime));
            startTime = new Date(System.currentTimeMillis()); //更新当前时间
        }

    }

    //模拟倒计时
    public static void tenDown() throws InterruptedException {
        int num = 10;
        while (true){
            Thread.sleep(1000);
            System.out.println(num--);
            if (num<0){
                break;
            }
        }
    }
}
